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Statement of a problem № m268

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A byte is a sequence of eight bits and each bit is either 0 or 1. (a) How many different bytes are possible? (b) If the first bit of a byte is a parity check, that is, the first byte is determined from the other seven bits, how many different bytes are possible?

Solution:
A byte is a sequence of eight bits and each bit is either 0 or 1.
  (a) How man

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